[[Special:MyLanguage/File:Discharge_division_by_Threshold_Concept.png|thumb|Discharge_division_by_Threshold_Concept]]Here the second discharge is only activated from a critical inflow Qkrit. In the threshold value model, the 2nd outlet (e.g. RÜ: outlet channel) is only pressurized from a critical inflow Qcrit where the 1st outlet (e.g. RÜ: throttle) backs up to the overflow threshold. Since in reality a perfect division of the outflows after reaching the threshold value is usually not possible, a total correlation for the structure can also be specified for better recording of the actual conditions.
[[Datei:Abflussaufteilung_nach_Schwellwertkonzept_EN.png|thumb|Discharge distribution using a threshold value]]
[[Special:MyLanguage/Datei:Trennschärfe.png|thumb| Definition of the parameter Discriminatory Power in Talsim-NG]]
In this case the second outflow only becomes active if the inflow exceeds the threshold of <code>Qcrit</code>. In the threshold value approach, the 2nd outlet (e.g. stormwater overflow) is only activated once a critical inflow <code>Qcrit</code> is exceeded, causing the throttled outflow to back up, reaching the overflow threshold. Since in reality a perfect division of the outflows after reaching the threshold value is usually never achieved, a diversion coefficient can also be specified in order to better represent actual conditions.
It is defined as: <math>\mbox{Total Correlation }= \frac{Q_{ab}(Q_{zu}=5 \cdot Q_{krit})}{Q_{krit}}</math>
[[Datei:Trennschärfe_EN.png|thumb|Definition of the diversion coefficient in Talsim-NG]]
It is defined as: <math>\mbox{diversion coefficient}= \frac{Q_{in}(Q_{out}=5 \cdot Q_{crit})}{Q_{crit}}</math>
Aktuelle Version vom 26. November 2020, 10:37 Uhr
Discharge distribution using a threshold value
In this case the second outflow only becomes active if the inflow exceeds the threshold of Qcrit. In the threshold value approach, the 2nd outlet (e.g. stormwater overflow) is only activated once a critical inflow Qcrit is exceeded, causing the throttled outflow to back up, reaching the overflow threshold. Since in reality a perfect division of the outflows after reaching the threshold value is usually never achieved, a diversion coefficient can also be specified in order to better represent actual conditions.
Definition of the diversion coefficient in Talsim-NG
It is defined as: [math]\displaystyle{ \mbox{diversion coefficient}= \frac{Q_{in}(Q_{out}=5 \cdot Q_{crit})}{Q_{crit}} }[/math]
